Ore-pulverizer



-anismas, for instance,

each adapted to receive u lUN TE STATES PATENT FFICEQ ORE-PULVERIZEVR.

rming part of Letters Patent No. 271,285, dated January 30, 1883.

Application filed October 23, 1882. (No model.)

rn: OME B. SWEE'ILAND, kland, State ot'Michiand useful Improveand I declare the folr, and exact description of the same, suc as will enable others skilled inthe art to wh h it pertains to make and use it, reference b n had to the accompanying drawings, whi form a part of this specification.

My invention consist devices and appliances and more particularly claims.

In the drawings, Fig e 1 is a vertical section of a device embody g my invention. Fig. 2 is a plan view with t top removed. Fig. 3 is a plan view of the ower portion of the case, with the top and eb removed. Fig. 4 represents a suitable dr ing mechanism.

It is the object of m invention to provide an improved ore-pulver er.

In carrying out my in ention', A represents the lower portion or wa of a hollow case of suitable form, and B th pper portion or wall of said case. The two ortions are provided with flanges a and b, a d are adapted to be bolted together, as show at b. The portion or wall A is constructed vith a discharge-orin the combinations of i erein after described, pointed out in the fice, a. The portion or all B is preferably constructed with a centr elevation, as shown in Fig. 1.

G is a revolving web, ich, as here shown, is constructed with a c tral inclined elevation, b and a horizonta flange, b forming the outer surface of the eb. This construction facilitates the dispe ion of the ore to the outer edge of the web.

D is ashaft extending ipward through the upper portion or wall of he case, adapted to support the web, and by hich said web is revolved within said case any suitable mecha beveled gear, D.

1) is a hub, by means f which the web is held up free from the b0 in of the case.

I construct the revolv g web with a suitable number of recesses o U-shaped spaces, 0, etallic ball, E, and erein. V coated for feeding to allow its free rotation F is a hopper suitabl the ore into the machine.

chiefly upon the balls E, and upon a limited space on the interior surface of the case, which receives the force of the rotating balls, and also upon those portions of the web within the U-shaped spaces against which the balls impinge, as the web itself runs free and clear of the case. To provide for the wear of these localities, I prefer to construct the two portions of the case with removable segments of chilled iron or steel, as shown at a of a width suitable to take the wear on the inner surface of the case, which can be easilyreplaced when desired. I prefer, also, to construct the U- shaped spaces of the web' with suitable removable pins, 0, adapted to prevent the wear of the balls upon the web, said pins being secured in suitable sockets and provided with rubber or otherelastic packing at the base, adapted to project the pins as the balls or the segments wear away until it is necessary to replace them. For this purpose I prefer to construct the web thicker where these pins are inserted. The elevated portion may be made of thinner metal. I also prefer to construct the case thicker at its periphery; and to make the two sections tighter when secured together, the flanges a and b may be provided with an intervening packing, (shown at a It is preferable, moreover, to construct the lower section, A, concave from the discharge-orifice to the wearing-surface. In case it is desired to use this device as a dry-pulverizer the dischargeorifice a is left open; but to adapt it for a wetpulverizerI provide said discharge-orifice with a removable cap, H, which, when applied, will effectually close said orifice. I also provide the case with an additional discharge-pipe, I, the water and The pipe I suitably located to carry ofl" pulverized ore from the machine.

the exterior of the web 2 ames may be located above or below the web, as may be desired. Moreover, a separate inletpipe, 1, for water may be provided or water may be fed with the ore through the hopper.

J represents a suitable number of scrapers or deflectors, inclined from the middle of the web outward in the direction of the motion, adapted to scrape the pulverized ore to the discharge-orifice in the dry process when the web is revolved as indicated by the arrow, Fig. 2. Y

J represents one or more adjustable extension-wings, suitably secured to one or more of the scrapers in such a manner that it may be adjusted near to or remote from the inner surface of the case, as may be desired. With the use of this device too tine pulverization of the ore may be prevented, should it be desired to cence-ntrate the ore instead of pulverizing it.

J is one or more scrapers or deflectors, in

clined from the outer edge of the web inward in the direction of the motion, adapted to scrape the pulverized ore outward for a more thorough pulverization and prevent unpulverized ore from workinginto the discharge-orifice.

- 1n the use of the machine the scrapers or de-.

flectors J and J are employed simultaneously, one serving to direct the ore to the outer edge of the web, while the other, by its different arran gement, serves to direct the more finely pulverized ore to the discharge-orifice. The arrangement of the scraper or deflector J is important, for the reason that if all the scrapers were arranged the same as the one J their tendency,in connection with centrifugal force, would be to clog up the machine at the periphery of the web; but the arrangement of the scraper J neutralizes the centrifugal force and directs the most finely pulverized ore to the central discharge-orifice.

In a pulverizer so constructed it is evident that a peculiar grinding motion is given to the balls when the web is driven at suitable speed, caused by the positive forward force of the web driving the balls, their motion not being dependent upon centrifugal force.

I have described my invention as an ore-pulverizer; but it is evident that it is also adapted for grinding grain and for other varieties of work, and I would have it understood that I do not limit myself to its use as an ore-pulverizer, out also contemplate its use for grinding cereals and for other purposes for which it is adapted.

7 What I claim is-- 1. The combination of a stationary casing provided with an inlet, and having its bottom wall constructed with a'central discharge-orifree, with a web arranged to revolve in a horizontal plane, and having its central portion constructed with the inclined elevation-b and loose balls carried at the periphery of the web, substantially as described.

2. The combination of a stationary casing composed of top and bottom walls, the former constructed with a central elevation and having an inlet-opening, with a web, 0, arranged to revolve in a horizontal plane, and constructed with a central inclined elevation, b and loose balls carried at the periphery of the web, substantially as described.

8. The combination of a stationary casing composed of top and bottom walls, the former having an inlet-opening, with a shaft,D, projecting through the top wall, the web O, at tached directly to the lower end of the said shaft, the hub D, attached to the shaft and supported by the top wall of the casing, for holding the web free from the bottom wall of the latter, and loose balls carried at the periphery of the web, substantially as described.

4. The combination of a casing, a revolving web, loose balls carried in recesses at the edge of the web, and movable pins or bearings arranged in the web, and against the projecting ends of which pins the balls rest, substantially as described.

5. The combination of a casing, a revolving web, loose. balls arranged in recesses at the edge of the web, removable pins or bearings arranged in said recesses, and means for projecting the pins or bearin gs to retain their outer ends in contact with the balls, substantially as described.

6. The combination of a casing, a revolving web, loose balls arranged in recesses at the edge of the web, removable pins or bearings arranged in said recesses, and elastic packings operating to project the pins or bearings and retain their outer ends in contact with the balls, substantially as described.

7. The combination of a casing composed of top and bottom walls, the latter havinga central discharge-opening and the former an inlet-opening, a web arranged to revolve in a horizontal plane, pnlverizing devices carried at the outer edge of the web, and a scraper or deflector located horizontally between the web and the bottom wall of the casin g, and inclined from the center of the web outwardly in the direction of motion of the latter, for carrying the material inward along the bottom of the wall to the delivery-orifice therein,- substan 'tially as described.

8. The combination of a casing composed of top and bottom walls, the former having an inlet and the latter a central discharge-opening, a web arranged to rotate in a horizontal plane, pulverizing devices carried at the edge of the web, and a scraper or deflector located horizontally between the web and the bottom wall of the casing, and inclined from the edge of the web inward to the center in the direction of motion of the web, for carrying the material outward along the bottom wall of the casing to the pulverizing devices, substantially as described.

9. The combination of a casing composed of top and bottom walls, the former having an inlet and the latter a central discharge-opening, a web arranged to rotate in a horizontal plane, and carrying pulverizing devices at its periphery, and the oppositely-inclined scrapcated in recesses at its periphery, of a removers or deflectors J J located between the Web able cap at the base, whereby the devices are and the bottom wall of the casing, the former adapted for use as a dry or wet pulverizer, actingto carry the material inward toward the substantially as described.

5 discharge-opening and the latter to carry the In testimony whereof I sign this specifica- I 5 material outward to the pulverizing devices, tion in the presence of two witnesses.

substantially as and for the purpose de- JEROME B. SWEETLAND scribed. I Witnesses:

10. The combination, with the inclosed cas- FRANKLIN A. CRAWFORD, 1o ing and the revolving web, having balls lo- I LAFAYETTE BOSTWIGK. 

